Removing at-risk-files

Norton should have quarantined tham and you should not have to worry about them. You should also use spyware programs routinely to remove malware. Virus programs do not concern themselves with them, but if you get enough they will slow your system to a halt.
If you are unfamiliar with spyware/Malware, check out the articles at:
http://www.pcmag.com/article2/0,4149,1522416,00.asp
http://www.pcmag.com/article2/0,4149,1523357,00.asp
After you are virus free then attach SpyWare.
For the Spyware/Malware the two Free scanners are AdAware 6 at:
http://www.lavasoftusa.com/
And Spybot Search & Destroy at:
http://www.safer-networking.org/index.php?page=download
After Installing each check for updates before proceeding. Both have several cool tricks, Adaware has a custom search that can search your Hosts file and your archived files as well. SPpybot S&D has an new program called Teatime that doesn't install by default you have to check the box ehn you are installing. SPybot S&D also has an Immunization program.
Another excelent program is SpySweeper from www.webroot.com, it allows for one update and then you need to purchase to get anymore updates. It will find a lot that the two free one didn't.

When you are all clean, get the free ZoneAlarm 4.5 at:
http://download.zonelabs.com/bin/free/1043_zl/zapSetup_45_594_000.exe
This is a slighly older version, but the is a problem with verersin 5.0.
Or even better buy the Pro version.